Autumn is March-April in early spring, and autumn is September-165438+10.
After bearing fruit, the branches of jujube trees will dry up and regain their vitality after winter, while grafting in autumn takes about three months, and then they can enter the normal branch stage.
Normal growth stage, when the climate is warmer, is more conducive to germination and fruiting.
Generally speaking, the grafting of jujube trees can be selected from four methods: skin grafting, split grafting, abdominal grafting and bud grafting. The following is a detailed introduction for you:
1, skin grafting, also called subcutaneous transplantation.
This method is suitable for jujube tree grafting with the thickness of rootstock greater than that of scion and the rootstock sprouting and peeling. First, cut the scion into smooth 3-5 cm long cuts.
Surface, in order to facilitate the insertion, and then cut a short slope of 0.5cm on the back of the lower end of the long section. Choose an anvil with smooth branch skin to make the cross section smooth and cut it in.
On one side of the rhizome, cut vertically with a knife and reach the xylem. When inserting the scion, the long section faces inward, the short section faces outward and faces the direction of the incision.
Insert slowly. The cutting surface of the scion should not be completely inserted into the rootstock, and the upper part should be exposed by 0.4-0.5 cm to facilitate wound healing, and then it should be used.
Plastic strips are tightly tied around the wound.
2, bud grafting with xylem
Select the grafted bud on the scion, cut off the secondary branch above the main bud by 1cm, and cut a long face on the back or side of the main bud with a length of 2.5-.
3 cm. Cut short face on long face, length 1 cm. Leave 0.8- 1 cm on the upper part of the main bud and cut it off, and choose the place where the rootstock is 20cm from the ground.
Cut off the upper part of the smooth branch bark, then cut it across the rhizome to the xylem with a knife, cut the phloem from bottom to top, find the cambium, and use
The grafting knife cuts down 3-5 cm along the cambium, inserts the long section of the grafting bud inward along the incision, inserts the short section outward, aligns with the cambium, and uses plastic.
Strip wrapped wound, only budding. The survival rate of this grafting method can reach more than 90%.
Step 3 plug in
Splitting is a kind of branch grafting, also called big grafting. The transplantation time can be earlier than the skin grafting time. It is not easy to peel off the bark, but the sap has begun to flow out.
It's time to continue. Grafting of seedlings or trees in nursery can be done. The method is as follows: the seedlings in the nursery are grafted, and the weeds and useless plants around the seedlings are removed first.
Clean up the root seedlings. Stick the rootstock seedlings to the ground and cut them off, then dig out the soil about 10 cm deep to expose the thick and smooth parts of the roots.
Cut the cross section of the rootstock with scissors, split the rootstock with a 2-3 cm long incision along the central longitudinal direction of the cross section of the rootstock, and then quickly remove the scion from
2-3cm away from the lower end, cut down into a double-sided wedge-shaped glossy surface, with the upper part thick and the lower part thin. If the scion is thinner than the rootstock, one side of the face is slightly thinner than the other.
Side, the main bud is on the thin side, then quickly insert the cut scion into the split of the rootstock, leaving a section of 1-2 mm at the upper end of the scion section.
It is called "exposure", so that the cambium on the thicker side of the scion is aligned with the cambium of the rootstock (if the thickness of the rootstock and the scion is the same, the rootstock can be made.
Aligned with the cortical cambium on both sides of the scion). Then, the joint of rootstock and scion is evenly wrapped with plastic film to keep moisture.
If the scion is not sealed with wax, wrap the whole scion tightly with a thin plastic film to prevent water loss.
4. Abdominal connection
Using pruning shears or cutting knives, cut a long face at the lower end of the scion, about 3cm long, and then cut a face about 1.5cm long.
Shorten the surface, the cut scion should be thin on one side and thick on the other, and then cut obliquely downward at the part of the rootstock to be grafted with pruning shears or cutting knives.
About 3-4 cm interface. Push open the rootstock interface and insert the scion quickly, with the long notch facing inward and the short notch facing outward, so that the scion is notched.
The arc layer is aligned with the arc layer of the rootstock, the rootstock above the joint is cut off, the incision is inclined, and finally the joint is connected with the plastic strip.
Cut the rootstock and wrap it tightly.
Management of grafted seedlings:
1. Water the rootstock three days before grafting, and water it again immediately after grafting to increase the water content of the rootstock.
2. After grafting, adventitious buds on rootstock are easy to germinate, which affects the survival and growth of grafted buds. In order to concentrate nutrition supply on grafting
Sui, in order to promote healing, we must wipe off the sprout of roots in time. Generally need to germinate 3-4 times.
3. Unbinding bud grafting and branch grafting should be based on bud grafting, scion and rootstock healing. Generally, after the grafted seedlings survive, they are grafted in 6 times.
In the middle and late month, loosen it once and untie it all at the end of August. At the same time, the budding branches of the scion should be tied tightly with wooden sticks in time or the branches grow to 20.
Pick the seeds in time at-30CM to avoid grafting failure caused by strong wind.
How to graft jujube trees? Bian Xiao will tell you about the best time and steps of jujube tree grafting. Jujube is a common water.
Fruit varieties and tree species are also one of the modern health foods, which can be used for daily consumption or for making soup and enriching blood, with great efficacy.